Improvement in attachments for button-hole machines



3 Sheets-Sheet 1. J. J. SULLIVAN.

ATTACHMENT FOR. BUTTON-HOLE MACHINES. .N 179 232 Patented. June 27,1876.

Witnesses: Inventor:

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N.PETER3, PHDm-LITMQGRAPMER. WASHINGTON. C.

3SheetsSheetZ. J. J. SULLIVAN.

ATTACHMENT FOR BUTTON-HOLE MACHINES. No.179,Z3Z. Patented June 27,1876.

Wlbnesses Invenl'ww ZM/W am/M N. PEIERS, FMDTO-LITHOGRAFHER. WASHINGTON,n c.

3 Sheets-Sheet 3.

J. I. SULLIVAN. ATTACHMENT FORBUTTON-HOLE MACHINES. No. 179,232;

Patented June 27, 1876.

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N-PETERS, PHOTO-LITMOGRAPHER, WASHINGTON, D, C.

UNITED STATES.

PATENT QFFTHTQ! JOHN J. SULLIVAN, OF IPswIoH, MASSACHUSETTS.

IMPROVEMENT IN ATTACHMENTS FOR BUTTON-HOLE MACHINES.

Specification forming part of Letters Patent No. 179,232 dated June 27,1876 application filed To all whom it may concern:

Be it known that I, JOHN J. SULLIVAN, of Ipswich, in the county of Essexand State of Massachusetts, have invented certain new and usefulImprovements in Automatic Attendants for Button-Hole Machines; and I dohereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawings, and to letters of. reference marked thereon,which form a part of this specification.

My invention relates to a new and useful attachment to button-hole andsimilar machines, adapted to automatically stop the machine as soon aseach button-hole is finished, by which one operator may run two or moremachines at the same time, thus saving a great deal of costly labor, ascompared with the running of button-hole machines without an automaticattendant, in which latter case a separate operator was required foreach machine.

My invention consists of an adjustable projection on the clamps forholding the material, in combination with a lever, movable on a fulcrum,which lever is provided at its rear end with a brake, that acts upon thedriving-wheel of the machine, and stops it as soon as the aforesaidprojection strikes against the for- Ward end of said lever when thebutton-hole is supposed to be finished. Immediately after thebrakeaforesaid has touched the drivingwheel a rod attached to thebrake-lever, and having a wedge or incline in its other end, acts upon asmall lever movable around a fulcrum, by which the said small lever isreleased from a groove in the shipper-bar, in which it was resting. Theshipper-bar in moving laterally operates a bent lever around itsfulcrum, the lower end of which is connected to the treadle or othershipper device that is used by means of-a cord, chain, rod, or othersuitable connection.

On the accompanying drawings, Figure 1 represents a plan. Fig. 2represents a crosssection on the line A B shown in Fig. 1. Fig.

3 represents a cross-section on the line 0 1), also shown in Fig. 1; andFig. 4 represents a a front elevation. Fig. 5 represents a sideolevation of the treadle mechanism and shaft April 3,-1676.

for operating the machine, and Fig. 6 is a rear elevation of the same.

Similar letters refer to similar parts wherever they occur on thedifierent parts of the drawings.

a represents the frame of an ordinary but- -ton-hole machine, of whichI) is the work-plate.

0 c are the clamps for holding the work; and cl is the driving orbalance wheel, arranged in the ordinary way. The rear of the clamps c cis provided with an adjustable projection, e, that can be adjusted toand from the clamps c c, as may be desired. f is the rocking lever,

ver f has attached to it a downward-projecting piece, 70, having a holein its lower end,

through which the screw-threaded rod 1 projects, having adjustable nutsm m in m, by which its proper position in relation to the lever f caneasily be arranged. The screwthreaded rod Z is provided in its oppositeend with a Wedge or incline, n, that acts upon the outer end of a smallrocking lever, 0, that is movable on the fulcrum p, as shown in Fig. 3.The inner end of the small lever 0 rests in a groove, g, on theshipper-bar q when the button-hole machine is in operation; but as soonas the projection c on the clamps o c strikes. the projection h on theleverf, or immediately after such contact has taken place, theshipper-bar q is released from the small lever 0, by the screw-threadedrod 1 and its Wedge a moving forward by means of leverf with its brake iacting on the balance-wheel 01. As soon as the shipper-bar qis releasedit will be moved to its proper place by the spring j, attached to thetreadlej, acting through the cord or chain 7', as shown in Fig. 5, theupper end of which is jointed or connected to the knee-lever s, movableon the fulcrum 8', and provided in its upper end with a slot, fittingover a pin on the shipper-bar q, as shown in dotted lines in Fig. 2.t'is a handle onlthe outer end of the shipper-bar g, by which the lattercan be set in operation.

The drawings represent the respective positions of the various partswhen the machine is in running order; but as soon as the clamps c ccommence to move to the rear, corresponding to the finish of the buttonhole that is made, the projection c on the clamps c c operates the leverfon its fulcrum g, and in so doing not only brakes on the balance-wheeld, but also automatically op rates the shipperbar (1 and its connectingmechanism to the treadle, and in this manner stops the machineautomatically as soon as each button-hole is finished.

To start the machine, all that is necessary to do is to place the clampsc 0 and the work resting between them in their proper positions in theordinary way, and to push the handle 15 of the shipper-bar q toward themachine to the position shown in Fig. 2, when the kneelever s is turnedon its fulcrum s, and thereby operates the connection 4 and the ordinarytreadle mechanism.

What I wish to secure by Letters Patent, and claim, is

1. In combination, with the clamps c c of a button-hole machine, the adj nstable projection e. lever f, with its projection h, brake i, anddriving or balance wheel 01, as and for the purpose set forth anddescribed.

2. In combination, the clamps c c, adjustable projection c, lever f,projection 70, rod 1, Wedge a, lever 0, shipper q t, the knee-lever s,and link or connection 1 to the treadle mechanism, substantially as andfor the purpose HENRY OHADBOURN.

